<!--
 * @Author: hucc
 * @Date: 2021-10-13 20:02:19
 * @LastEditors: hucc
 * @LastEditTime: 2021-10-13 20:05:26
 * @Description: 
-->
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    div {
        width: 800px;
        height: 800px;
        border: 3px solid orangered;
        margin: 0 auto;
    }
</style>

<body>
    <div>

    </div>
</body>

</html>